OFFSET
0,3
FORMULA
a(n) ~ c * d^n * n^n / exp(n), where d = 3.2897906634948022290195938576166779380... and c = 0.7144692216716261155107169918... - Vaclav Kotesovec, Oct 06 2017
MATHEMATICA
Table[n! SeriesCoefficient[Exp[n Tan[x]], {x, 0, n}], {n, 0, 19}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Ilya Gutkovskiy, Sep 28 2017
STATUS
approved